If you come in the house on a cold day, take your coat off, or else you'll catch a cold.
If you get warts from touching a toad, bury your clothes in the backyard.
If you pick a scab off a wound, one more scab will come back. If you pick that one off, you'll have a scar for the rest of your life.
If you are looking for a job at a certain place, keep going back and ask them again and again if there are any jobs available. They will get so sick of looking at you, they will hire you, just so they don't have to look at you again. (I eventually reasoned it out that if they hire me, they will have to look at me all the more.)